Improvement in spindle for spinning silk



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GEORGE SINGLE'ION, OF ROCKVILLE, CONNECTICUT, ASSIGNOR TO HIMSELF, JAMES F.'PRESTON,l AND JOHN N. LEONARD, OF SAME PLACE, ROBERT )SINGLETON AND E. KELLOGGr` ROSE, OF PATERSON, NEW JERSEY, AND LEONARD 86 LOCKHART OF CHICAGO, ILLINOIS.

Lettcrs Patent No. 98,309, dated December 28, 1869.

IMPROVEMENT IN SPINDLE FOR SPINNING- SILK.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern v Be it known that I, GEORGE SINGLETON, of the, village of Rockville, county of Tolland, and Starte of Connecticut, have-invented certain new and useful Improvements in Silk-Spinnmg Machinery; and I do hereby declare that the following is a full and enact description thereof, enabling others skilled in the art to make and use the same, reference being had to the accompanying drawings, in which- Figure l is a section, through vertical centre, and

Figure 2, an outline view.

In the thread-like state 4of silk, as it is obtained from the worm, it is too fine and frail to be useful until it has been subjected'to the process of doubling and twisting.

In the manufacture of sewing-silk, this is done by winding a number of threads together upon a bobbin, which is` then placed ou a revolving spindle, and the threads are twisted together as they are reeled olf from this upon another bobbin, L.

The object of my invention is to spin s ilk with more speed'and'regularity than can be accomplished with the machinery now employed for that purpose.

'lhe chief diiculty encountered in spinning at an extra high speed,- has been that the proper tension could not be maintained.

This couldbe obviated if the speed of the spindle were at all times the same, as, in that case, the tension could be set -at that point, but as vthe speed varies, this cannot be done; therefore, a compensator, to govern the tension, is required. y

'My invention consists in a device or devices to accomplish this result. y,

.A is the compensating top, which is slipped over the tapering upper end of spindle I, and which ,is heldin its place by its own weight. The motive forv making it movable is .to admitof the adjustment or removal of bobbins C,

I is the supporting-stem of ali the other revolving parts. 1t extends from the top A down through thimble'D, wa-sher F, rail-seat G, to adjustable step 0.

`The tlrimble D, which receives and vrevolves thev bobbin, is revolved by means of an endless belt or cord, K, passing around the wheel E.

F is the separate bottom bearing of `D. It tits loosely around I, and rests upon G.

G H is the support for the whole. It slips up through rail P, at G, where it is made fast by means of a set-screw, and extends downward to a hollow vertical boss, J, which is provided with a 'screwthread', through which the wooden -step o is screwed, and on which the spindle I rests.

formed by the T-shaped bead.

This traveller Bis the tension-device through which lpasses the thread to be twisted.

.As thimble D is not made fast to I, and tits it loosely, I only receives its motion ii'om the friction of D revolving around it, and not by any positive means. This is done so that thimble D, bobbin C, and traveller B will revolve much faster than A and I, for the following reason:

I f A were made stationary, and the traveller B left to revolve around itin the grooves as tast as the bobbin revolved, the result would be this: If the thimblc D and bobbin C were making one thousand revolutions per minute, the strain upon the thread, necessary to revolve the traveller' equally as fast, would be just what isrequired to keep it fi'om kinking; but it' the speed be increased from one thousand to tive thousand revolutions, the thread would immediately break by the extra strain or power required to revolve the traveller.

y --Operatz'om r yThe compensating top A 'is so weighted that it and I do not 'revolve as fast as C, D, and B, by one thonsand revolutions per minute; asfor example, if C, D, and'B, are making tive thousand revolutions per min-l ute, A and I are making but four thousand. By .this means, the traveller Bis carried along by the top A to within one thousand revolutions of that of C and D,l

leaving thethread to equalize the speedof B, C, and D, by which means there is no perceptible ditl'erence or variation in the tension on the thread, no matter what the'speed rnay be after it attains one thousandrevolutions. A

, I do not claim the principle of varying the speeds of the bobbin and traveller, as herein described; but

What I claim as my invention, and desire tosecure by Letters Patent of the United States, is-

The compensating .top A, incomhination with traveller B, hollow revolving thimble D, and revolving spindle I, all arranged andv operating as described,

, and for the purpose 'set forth.

GEORGE SINGLETON.

Witnesses:

J. T. Ianscros, J. N. LEONARD. 

